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BOCA PRO16 Reference Guide
The Escape Sequence
When you issue commands to the modem all dialogue is occurring
between your computer and the modem. This situation is known as local
command state.
When you connect to a remote system, dialogue will be occurring
between your computer and the remote system. This is known as on-line
state. Because the modem assumes, after it enters on-line state, all the
data you send it is to be sent on to the remote modem, it ignores any AT
commands you give it while in on-line state.
To force the modem to return to local command state, enter an escape
sequence. An escape sequence consists of a one second delay, three +
characters typed rapidly and another one second delay. For example:
• Type:
AT&T1 <E>
The modem will enter on-line state (this command actually causes the
modem to enter test mode, but is equivalent to entering on-line state).
Now try to view the modem’s firmware identity code:
• Type:
ATI9 <E>
Your command will be ignored. This is because the modem assumes
you are typing characters to be sent to a remote system.
Now enter an escape sequence. Do not type any characters for one
second, type +++ rapidly and wait another full second. The modem will
respond with an OK message to indicate it has returned to local com-
mand state. You will be able to view the modem’s firmware identity.
Before continuing:
• Type:
AT&T0 <E>
This command is used to halt the test.
Getting Started
Getting Started
pro16ref.pm6 6/14/96, 2:36 PM19
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